US3444894A - Device for governing the pressure or quantity of a flowing gaseous medium - Google Patents

Device for governing the pressure or quantity of a flowing gaseous medium Download PDF

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Publication number
US3444894A
US3444894A US608335A US3444894DA US3444894A US 3444894 A US3444894 A US 3444894A US 608335 A US608335 A US 608335A US 3444894D A US3444894D A US 3444894DA US 3444894 A US3444894 A US 3444894A
Authority
US
United States
Prior art keywords
governing
central body
pressure
gaseous medium
passage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US608335A
Other languages
English (en)
Inventor
Einar Norelius
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Svenska Flaktfabriken AB
Original Assignee
Svenska Flaktfabriken AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Svenska Flaktfabriken AB filed Critical Svenska Flaktfabriken AB
Application granted granted Critical
Publication of US3444894A publication Critical patent/US3444894A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1413—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre using more than one tilting member, e.g. with several pivoting blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86718—Dividing into parallel flow paths with recombining

Definitions

  • the known device consists of a housing in which are arranged two damper blades movable towards each other and a central body arranged along the middle of the duct housing between the two damper blades so that these in their closed position will be in engagement with the side surfaces of the central body.
  • the device in accordance with the present application is intended to work with a high degree of throttling, i.e., when the quantity of fluid flow passing through the device has been reduced to about 40% of the maximum value. This involves great velocities and great pressure drops for the flowing fluid.
  • a high noise level will be obtained at the throttling point owing to the occurring high velocities at this point.
  • the noise is created by the mixing of the air currents after the central body. To eliminate the noise the velocity of the air must be decreased before the two branch currents are intermixed which can be carried out either by the extension of the central body or by turning same.
  • FIG. 1 shows a longitudinal section of a governing device in accordance with the invention
  • FIG. 2 shows the same device seen in front view.
  • a duct housing 1 there are arranged two substantially are shaped damper blades 2 fastened to arms 3 being turnable around axles 4.
  • the housing is fitted with pockets 5 into which the damper blades 2 can be introduced entirely or partly so that a passage 6 of variable cross-sectional flow area in the housing 1 is created.
  • a central body 7 Between the damper blades and along the centre-line of said passage there is arranged a central body 7. The fluid flow through said passage will thus be divided into two currents.
  • the central body 7 is turned around its turning axle so that it has an angle of about 10 to the main direction of the fluid flow.
  • the turning of said body takes place around an axle 8 located in the middle of said passage and in the point of intersection between the two curves of the damper blades 2 during their movement.
  • the form of the central body is adapted to that of the housing and the cross-section of the body has a shape adapted to aerodynamic viewpoints and is provided with a rounded front edge from which the central body is tapering backwards towards a pointed rear edge.
  • the front and the rear edges are defined by the flow direction of the fluid through said flow passage.
  • a device for governing the pressure or quantity of a flowing gaseous medium comprising a housing defining a longitudinal passage open at each end, two damper blades arranged in said housing and being movable towards each other in paths substantially perpendicular to the longitudinal axis of said passage, and a central body coextensive with and positioned between the two damper blades in said passage and extending from one side of the passage to the opposite side, said central body having a cross-sectional shape tapering from a rounded upstream end of substantial thickness to a pointed downstream end, the rounded upstream end of the central body being located at the intersection of the two paths of movement of said dam-per blades to be engaged thereby, said central body being positioned with its axis at an angle of about 10 with the longitudinal axis of said passage.
  • each of said damper blades consists of a substantially arc-shaped blade and at least one arm mounting each blade and turnably pivotable to displace each damper blade towards the other along an arcuate path substantially perpendicularly to the longitudinal axis of said passage, said paths intersecting at the rounded upstream end of said body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air-Flow Control Members (AREA)
  • Duct Arrangements (AREA)
US608335A 1966-01-13 1967-01-10 Device for governing the pressure or quantity of a flowing gaseous medium Expired - Lifetime US3444894A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE400/66A SE324644B (nl) 1966-01-13 1966-01-13

Publications (1)

Publication Number Publication Date
US3444894A true US3444894A (en) 1969-05-20

Family

ID=20256513

Family Applications (1)

Application Number Title Priority Date Filing Date
US608335A Expired - Lifetime US3444894A (en) 1966-01-13 1967-01-10 Device for governing the pressure or quantity of a flowing gaseous medium

Country Status (9)

Country Link
US (1) US3444894A (nl)
AT (1) AT270143B (nl)
BE (1) BE692524A (nl)
CH (1) CH445783A (nl)
DK (1) DK123668B (nl)
ES (1) ES335395A1 (nl)
FR (1) FR1516090A (nl)
NL (1) NL6700478A (nl)
SE (1) SE324644B (nl)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466254A (en) * 1982-07-06 1984-08-21 Masashi Karashima Refrigerated showcase
US4570850A (en) * 1984-04-23 1986-02-18 Mcd Enterprises, Inc. Modular ceiling air control device
DE10111187C1 (de) * 2001-03-08 2002-07-25 Siemens Ag Dampfleitungsverschlußventil und Dampfturbinenanlage mit Dampfleitungsverschlußventil
US20090235905A1 (en) * 2007-09-25 2009-09-24 Mann+Hummel Gmbh Device for swirling and mixing exhaust gases recycled in the intake duct of an internal combustion engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT50950B (de) * 1911-03-15 1911-11-25 Richard Herz Staubsaugeleitung.
US1437423A (en) * 1921-07-05 1922-12-05 Henry A May Governing valve for internal-combustion motors
US2214736A (en) * 1936-03-30 1940-09-17 Mead S Carmichael Apparatus for distributing materials
US2898080A (en) * 1954-07-28 1959-08-04 Techno Corp Check valve with operator therefor
US3139106A (en) * 1960-02-19 1964-06-30 Svenska Flaektfabriken Ab Pressure regulator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT50950B (de) * 1911-03-15 1911-11-25 Richard Herz Staubsaugeleitung.
US1437423A (en) * 1921-07-05 1922-12-05 Henry A May Governing valve for internal-combustion motors
US2214736A (en) * 1936-03-30 1940-09-17 Mead S Carmichael Apparatus for distributing materials
US2898080A (en) * 1954-07-28 1959-08-04 Techno Corp Check valve with operator therefor
US3139106A (en) * 1960-02-19 1964-06-30 Svenska Flaektfabriken Ab Pressure regulator

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466254A (en) * 1982-07-06 1984-08-21 Masashi Karashima Refrigerated showcase
US4570850A (en) * 1984-04-23 1986-02-18 Mcd Enterprises, Inc. Modular ceiling air control device
DE10111187C1 (de) * 2001-03-08 2002-07-25 Siemens Ag Dampfleitungsverschlußventil und Dampfturbinenanlage mit Dampfleitungsverschlußventil
US20040037700A1 (en) * 2001-03-08 2004-02-26 Detlef Haje Steam line isolation valve and steam turbine system with steam line isolation valve
US6929447B2 (en) 2001-03-08 2005-08-16 Siemens Aktiengesellschaft Steam line closing valve and steam turbine plant comprising such a steam line closing valve
US20090235905A1 (en) * 2007-09-25 2009-09-24 Mann+Hummel Gmbh Device for swirling and mixing exhaust gases recycled in the intake duct of an internal combustion engine

Also Published As

Publication number Publication date
SE324644B (nl) 1970-06-08
ES335395A1 (es) 1967-11-16
FR1516090A (fr) 1968-03-08
AT270143B (de) 1969-04-10
NL6700478A (nl) 1967-07-14
BE692524A (nl) 1967-06-16
DK123668B (da) 1972-07-17
CH445783A (de) 1967-10-31

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